GSTDTAP  > 地球科学
DOI10.1175/JAS-D-20-0094.1
Interactive Radiation Accelerates the Intensification of the Midlevel Vortex for Tropical Cyclogenesis
Yang, Bolei; Tan, Zhe-Min
2020-12-01
发表期刊Journal of the Atmospheric Sciences
出版年2020
英文摘要

Interactive radiation helps accelerate tropical cyclogenesis, but the mechanism is still unclear. Using idealized numerical modeling in the radiative–convective equilibrium framework, it is revealed that interactive radiation can bring forward tropical cyclogenesis by accelerating the development of the midlevel vortex. A strong horizontal longwave radiative warming anomaly in the layer between 6 and 11 km altitudes in the vortex region, caused by large concentration of ice-phased particles at high levels, is critical to the development of the midlevel vortex. This longwave radiative warming anomaly induces more upward water vapor flux (mainly in the nonconvective region) and then results in more latent heating at upper levels and more sublimation and melting cooling at lower levels. This leads to an increase of the vertical diabatic heating gradient, and then the intensification of the midlevel vortex. A stronger upward water vapor flux also produces more condensates at upper levels and further enhances the horizontal longwave radiative warming anomaly in the upper troposphere, constituting a positive feedback, and then accelerates tropical cyclogenesis.

领域地球科学 ; 气候变化
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/304277
专题地球科学
气候变化
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Yang, Bolei,Tan, Zhe-Min. Interactive Radiation Accelerates the Intensification of the Midlevel Vortex for Tropical Cyclogenesis[J]. Journal of the Atmospheric Sciences,2020.
APA Yang, Bolei,&Tan, Zhe-Min.(2020).Interactive Radiation Accelerates the Intensification of the Midlevel Vortex for Tropical Cyclogenesis.Journal of the Atmospheric Sciences.
MLA Yang, Bolei,et al."Interactive Radiation Accelerates the Intensification of the Midlevel Vortex for Tropical Cyclogenesis".Journal of the Atmospheric Sciences (2020).
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